Ignoring Spatial and Spatiotemporal Dependence in the Disturbances Can Make Black Swans Appear Grey

R. Kelley Pace () and Raffaella Calabrese ()
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R. Kelley Pace: Louisiana State University
Raffaella Calabrese: Business School University of Edinburgh

The Journal of Real Estate Finance and Economics, 2022, vol. 65, issue 1, No 1, 21 pages

Abstract: Abstract Automated valuation models (AVMs) are widely used by financial institutions to estimate the property value for a residential mortgage. The distribution of pricing errors obtained from AVMs generally show fat tails (Pender 2016; Demiroglu and James Management Science, 64(4), 1747–1760 2018). The extreme events on the tails are usually known as “black swans” (Taleb 2010) in finance and their existence complicates financial risk management, assessment, and regulation. We show via theory, Monte Carlo experiments, and an empirical example that a direct relation exists between non-normality of the pricing errors and goodness-of-fit of the house pricing models. Specifically, we provide an empirical example using US housing prices where we demonstrate an almost perfect linear relation between the estimated degrees-of-freedom for a Student’s t distribution and the goodness-of-fit of sophisticated evaluation models with spatial and spatialtemporal dependence.

Keywords: Spatial; Spatial-temporal; Non-normal distributions; Kurtosis; Rare events; Automated valuation models; Housing prices (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11146-021-09836-2

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